Intensive-classification low-NOx pulverized coal burner

An intensive-classification low-NOx pulverized coal burner comprises a primary air passage, a direct-flow inner secondary air passage and a cyclone inner secondary air passage; pulverized coal is separated by a coal flow equalizer and a pulverized coal separator disposed in the primary air passage into thick-inside thin-outside structure at a spout, blown into a hearth; the inner secondary air passage is provided with a direct-flow air inlet and a cyclone air inlet; secondary air is mixed in the inner secondary air passage and spayed into the hearth; volume of the direct-flow air is controlled through a pull rod, so that cyclone strength of the inner secondary air can be controlled. Each of primary and secondary air outlets is provided with a certainly angular spout expanded-cone structure, real-time mixing of the secondary air and the pulverized coal is effectively controlled, a spout water-cooling wall is in the oxidization atmosphere in a long period of time meanwhile, and slag buildup ...

Internal combustion ignition pulverized coal burner

An internal combustion ignition pulverized coal burner of the invention is suitable for a boiler which takes pulverized coal as fuel. The internal combustion ignition pulverized coal burner comprises a primary air duct connected with a pulverized coal reinforcement combustion chamber, a high strength ignition heat source and the reinforcement combustion chamber; the high strength ignition heat source is axially inserted into the pulverized coal reinforcement combustion chamber in a slant or horizontal way, the entrance of the pulverized coal reinforcement combustion chamber is provided with a circular concentrator, and the reinforcement combustion chamber is internally provided with a dog tooth-type concentrator. By using the ignition pulverized coal burner or the ignition pulverized coal burner also as a main burner and replacing fuel with pulverized coal, the ignition of the boiler and the work of flame stabilization are accomplished, the combustion efficiency of the pulverized coal of ...

Dense-and-weak separator of online regulable ring-shaped shutter

The invention relates to a dense-and-weak separator of an online regulable ring-shaped shutter, which mainly consists of a dense phase outlet, a weak phase outlet, a separating pipe, a regulating pipe, a ring-shaped shutter and a sliding sealing structure, wherein the side surface of the separating pipe is fixedly connected with a regulating stem; the regulating stem extends to an operation facilitating position outside the separator through the sliding sealing structure on the pipe wall of the separator; the separating pipe is regulated on line to regulate the separating distance between dense-phase airflow and weak-phase airflow, and the regulating range of the separating distance is 0-1 m. The dense-and-weak separator can still achieve an ideal dense-and-weak separating effect through regulating the separating distance on line when the inlet condition of the dense-and-weak separator is changed.

Horizontal bias internal-combustion igniter and main pulverized coal burner

The invention relates to a horizontal bias internal-combustion igniter and main pulverized coal burner which mainly comprises a primary air channel, a horizontal bias separating device, a high-intensity igniting gun, a pulverized coal supplemental firing chamber, a bias separating baffle and a perimeter air channel. The horizontal bias internal-combustion igniter and main pulverized coal burner inserts the high-intensity igniting gun in the pulverized coal supplemental firing chamber from the lean phase side of the pulverized coal burner, primary air-coal at the dense phase side is heated to ignition temperature of the pulverized coal, volatile components in the pulverized coal quick separate out and burn, and charcoal materials are simultaneously heated and burned to form high-temperatureflames which are ejected into a furnace chamber so as to achieve the purposes of ignition and pulverized coal burning. In the progresses of furnace-starting ignition, furnace-shut-down combustion supporting ...

Controllable air film double-side strong pre-heating breeze combustion device

The invention relates to a controllable air film bilateral forcedly preheating pulverized coal combusting device. The device is provided with a tubular pulverized coal pipeline which is communicated with a furnace hearth; a combustor spout cavity where the pulverized coal pipeline is connected with the furnace hearth and the fire-backing side of the furnace hearth are provided with a bulge-expansion cavity which is enlarged towards one side; the side wall of the bulge-expansion cavity is provided with an air film wind window through which air film wind can pass; the periphery of the bulge-expansion cavity is covered by a shell to form a wind box; and an inlet of the wind box is provided with a wind amount actuator and a wind amount adjustor which can adjust the ventilating amount of the bulge-expansion cavity. The device can make the pulverized coal on the fire-facing side ignited in advance and preheat the pulverized coal airflow on the fire-backing side to effectively intensify the combustion ...

Three-way catalyst efficiency diagnosis control method and device, vehicle and storage medium

The invention discloses a three-way catalyst efficiency diagnosis control method and device, a vehicle and a storage medium. The three-way catalyst efficiency diagnosis control method comprises the steps that under the condition of triggering oxygen storage amount calculation enabling, the initial oxygen storage amount, the current oxygen storage amount and the current carrier temperature are obtained, and when the current oxygen storage amount is larger than a first set oxygen storage amount limiting value, the current oxygen storage amount calculation frequency corresponding to the current oxygen storage amount is determined; if the oxygen storage amount difference value between the initial oxygen storage amount and the current oxygen storage amount is smaller than or equal to a second set oxygen storage amount limit value, and/or the current oxygen storage amount calculation frequency is larger than or equal to the set oxygen storage amount calculation frequency, a weighted oxygen storage ...

Multifunctional combined atomizing gun

The invention relates to a multifunctional combined atomizing lance, mainly comprising a combined atomizing spraying head, a compression nut, a multilayer flow divider, an outer lance tube, a medium conduct, an inner lance tube, a center lance tube, a combined lance seat and a pipe joint. The multifunctional combined atomizing lance can simultaneously atomize liquid fuel with different physical properties and independently combust or combust the liquid fuel in a mixed mode by adopting different atomizing modes. The combined atomizing spraying head is not only provided with a mechanical atomizing swirl slot and a swirl chamber, but also provided with a medium atomized oil hole, vapor hole and mixed hole structure. Various fluids enter the multilayer flow divider though self pipeline first and then enter the combined atomizing spraying head for atomizing. Fuel with lower viscosity is strongly rotated, atomized and sprayed by a center spray hole, contacted with the outside atmosphere and broken ...

Novel lighting control device

The utility model discloses a novel lighting control device, including removing sensing device, signal send -receiver device and treater, the removal inductor is used for near perception, and whether someone or vehicle pass through to send control signal to the light through triggering signal notice treater, the opening, adjust luminance etc. Of control light, in order to solve the delayed problem, when near perception during to someone or vehicle, except turning on light or adjust luminance, treater still passing signal send -receiver device sends an alarm signal to near other lighting control devices action that implementation was turned on light or was adjusted luminance to the light in advance in notice. Certainly, the 2nd alarm signal that comes from near other lighting control devices of and to send is received to treater still passing signal send -receiver device, if received for the 2nd alarm signal, then near explanation someone or vehicle will pass through, then can be in advance ...

Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor

A fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor comprises a primary air channel, a multi-channel secondary air intake tube and a fuel/gas combustor. A circle of rectifying vanes are evenly distributed on the inner wall of an entryway of a strengthening combustion chamber in the primary air channel, a circle of swirling vanes are evenly distributed on the front outer wall of the fuel/gas combustor, the length from front the end of each swirling vane to the front end of the fuel/gas combustor is larger then or equal to the length of each overall rectifying vane, and the outer diameter of each swirling vane is smaller than the inner diameter of each rectifying vane; the fuel/gas combustor is back-front adjustable and capable of driving relative positions between the swirling vanes and the rectifying vanes to change; swirling intensity of secondary air of the combustor can be adjusted online, a reasonable high-temperature flue gas recirculation zone ...

Method for combusting fuel reburning low-nitrogen oxide

The invention discloses a method for combusting a fuel reburning low-nitrogen oxide and belongs to a clean combustion method for a coal-fired boiler. Secondary medium air is used as a powder conveying medium of a combustor on the upper layer of the main combustion area of the boiler, coal powder used as a reburning fuel is conveyed into the boiler, the secondary medium air is used as distributed air of the combustor, the secondary air of the combustor on the upper layer is reduced correspondingly, the distributed air in the reburning area is reduced correspondingly, low excess air combustion is formed, the distributed air in a hearth is not enough, and finally over fire air (OFA) complements the required air; and the mixed medium of air and fuel gas is used as the conveying medium of the coal powder of the combustor of the upper layer, and the coal powder with the conventional fineness is conveyed into the boiler from the combustor on the upper layer by using a coal mill and a powder making ...

Integrated pure oxygen combustion baking device

An integrated pure oxygen combustion baking device is used for steel ladle baking and scrap steel preheating in a steel mill. The device comprises a pure oxygen burner, a hot flue gas collector, a heat exchanger, a spray gun and a fixed bracket, the pure oxygen burner, the hot flue gas collector and the heat exchanger are integrated on the steel ladle cover, the pure oxygen burner is located in the middle of the steel ladle cover, the heat exchanger is located between the pure oxygen burner and the hot flue gas collector, the fixed support is provided with an overturning support, a rotating shaft and a fixed pulley block, and the steel ladle cover is provided with a movable pulley block. The movable pulley block is connected with a fixed pulley block arranged on the fixed support through a pulling rope, the overturning support is fixed to a steel ladle cover, and the overturning support can overturn within the range of 85 degrees from the horizontal direction to the vertical direction through ...

Controllable air film bilateral strong preheat pulverized coal combustion device

The invention relates to a controllable air film bilateral strong preheat pulverized coal combustion device. The device is provided with a tube-shaped pulverized coal piping to be communicated with a hearth, a sudden expansion cavity expanding to one side is arranged at the side opposed to fire of the hearth at the combustion nozzle cavity where the pulverized coal piping is connected with the hearth, an air film window through which air film wind can pass through is arranged on the sidewall of the sudden expansion cavity, the periphery of the sudden expansion cavity is wrapped by the shell to form an air chamber, and an air flow actuator and an air flow adjusting device are arranged at the inlet of the air chamber to adjust the ventilation rate of the sudden expansion cavity. The device can cause the pulverized coal at the side facing fire to be ignited firstly, preheat pulverized coal air flow at the side opposed to fire, can effectively strength combustion of the pulverized coal and ...

Multi-stage backflow intensifying internal-combustion igniter and main pulverized coal burner

The invention relates to a multi-stage backflow intensifying internal-combustion igniter and main pulverized coal burner which mainly comprises an internal-combustion pulverized coal burner, heat source entrainment backflow mechanisms and a burner nozzle. The middle back part of the internal-combustion pulverized coal burner is fixedly connected with the heat source entrainment backflow mechanisms, the heat source entrainment backflow mechanisms are used for carrying out the entrainment of the high-temperature heat source in the internal-combustion pulverized coal burner to form a stable intensifying heat source to intensify the burning of primary air-coal in the internal-combustion pulverized coal burner, and the number of the heat source entrainment backflow mechanisms ranges from 1 to 5. The invention is applicable to different types of boiler furnaces for burning different kinds of coal and has wide applicability. Because of the invention, in the progresses of furnace-starting ignition ...

Multifunctional combined atomizing lance

The invention relates to a multifunctional combined atomizing lance, mainly comprising a combined atomizing spraying head, a compression nut, a multilayer flow divider, an outer lance tube, a medium conduct, an inner lance tube, a center lance tube, a combined lance seat and a pipe joint. The multifunctional combined atomizing lance can simultaneously atomize liquid fuel with different physical properties and independently combust or combust the liquid fuel in a mixed mode by adopting different atomizing modes. The combined atomizing spraying head is not only provided with a mechanical atomizing swirl slot and a swirl chamber, but also provided with a medium atomized oil hole, vapor hole and mixed hole structure. Various fluids enter the multilayer flow divider though self pipeline first and then enter the combined atomizing spraying head for atomizing. Fuel with lower viscosity is strongly rotated, atomized and sprayed by a center spray hole, contacted with the outside atmosphere and broken ...

Method for calculating input value of original emission of nitrogen oxide and engine post-processing system

The invention discloses a calculation method of an input value of original emission of nitrogen oxide and an engine post-processing system, and relates to the technical field of engine post-processing. The method for calculating the input value of the original nitrogen oxide emission comprises the following steps that the first input value A of the original nitrogen oxide emission is calculated on the basis of the real-time conversion efficiency of nitrogen oxide of an engine aftertreatment system and the target value of the tail nitrogen oxide emission; calculating a second input value B of the original nitrogen oxide emission based on the minimum value of the urea fuel consumption rate of the engine; and comparing the first input value A of the original emission of the nitrogen oxide with the second input value B of the original emission of the nitrogen oxide, and taking the smaller value of the first input value A and the second input value B as the final input value of the original ...

Dense-and-weak separator of online regulable ring-shaped shutter

The invention relates to a dense-and-weak separator of an online regulable ring-shaped shutter, which mainly consists of a dense phase outlet, a weak phase outlet, a separating pipe, a regulating pipe, a ring-shaped shutter and a sliding sealing structure, wherein the side surface of the separating pipe is fixedly connected with a regulating stem; the regulating stem extends to an operation facilitating position outside the separator through the sliding sealing structure on the pipe wall of the separator; the separating pipe is regulated on line to regulate the separating distance between dense-phase airflow and weak-phase airflow, and the regulating range of the separating distance is 0-1 m. The dense-and-weak separator can still achieve an ideal dense-and-weak separating effect through regulating the separating distance on line when the inlet condition of the dense-and-weak separator is changed.

Lighting control device

The utility model discloses a lighting control device, including an optical line sensors, the 2nd optical line sensors and treater, the treater is judged by a sensor signal of optical line sensors formation and the 2nd sensor signal of the 2nd optical line sensors formation the illuminance of light surrounding environment, according to the judged result to the corresponding control signal of light output is with control the opening, close and/or the power adjustment of light. The utility model discloses utilizing the illuminance of first, the 2nd optical line sensors investigation surrounding environment, having very high investigation precision, the illuminance according to environment automatically regulated light at that time that can be accurate has obtained better balance between energy -conservation and illumination.

Horizontal bias internal-combustion igniter and main pulverized coal burner

The invention relates to a horizontal bias internal-combustion igniter and main pulverized coal burner which mainly comprises a primary air channel, a horizontal bias separating device, a high-intensity igniting gun, a pulverized coal supplemental firing chamber, a bias separating baffle and a perimeter air channel. The horizontal bias internal-combustion igniter and main pulverized coal burner inserts the high-intensity igniting gun in the pulverized coal supplemental firing chamber from the lean phase side of the pulverized coal burner, primary air-coal at the dense phase side is heated to ignition temperature of the pulverized coal, volatile components in the pulverized coal quick separate out and burn, and charcoal materials are simultaneously heated and burned to form high-temperature flames which are ejected into a furnace chamber so as to achieve the purposes of ignition and pulverized coal burning. In the progresses of furnace-starting ignition, furnace-shut-down combustion supporting ...

Lean oil heat intensified firing actuating apparatus of pulverized coal boiler